Whether you've just run into a radioactive space mutant or fallen into a pool of flesh-eating gases, a solid scream is a handy tool for any space horror arsenal. In honor of Apollo 18beating Shark Night 3D at the weekend box office, check out our video tribute to gasps, shrieks, and bloodcurdling screams.

This is by no means comprehensive (there are more space monster movies, not to mention many of the companions on Doctor Who were real screamers), and it's not all horror, but we have a nice sampling of folks screaming aboard spaceships, on alien worlds, and in the cold of space.